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Number of (n+1)X(3+1) 0..3 arrays x(i,j) with every row sum{j*x(i,j), j=1..3+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal, with top left element <= 1
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%I #3 Nov 25 2013 08:00:23

%S 2,19,223,619,523,16285,141433,2231968,20520962,138309075,1507636982,

%T 428685674

%N Number of (n+1)X(3+1) 0..3 arrays x(i,j) with every row sum{j*x(i,j), j=1..3+1} equal, and every column sum{i*x(i,j), i=1..n+1} equal, with top left element <= 1

%C Column 3 of A232526

%e Some solutions for n=3

%e ..1..1..3..1....0..2..1..3....1..3..3..0....1..2..1..2....0..1..1..2

%e ..2..0..2..2....1..3..0..3....2..0..2..2....2..0..2..2....2..0..1..2

%e ..1..1..3..1....3..1..2..2....1..3..3..0....1..2..1..2....3..0..2..1

%e ..2..3..0..2....2..2..3..1....2..1..0..3....2..2..2..1....0..3..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 25 2013